CLAS physics database search results Measurement E151M1853 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.25 282 -0.1611 0.8832 0.0315 0.35 282 -0.2366 0.8609 0.0332 0.35 294 0.7834 0.79 0.0562 0.45 282 0.1458 0.7135 0.0313 0.45 294 0.7046 0.6687 0.0522 0.55 114 0.9077 0.8025 0.0627 0.55 246 0.1727 0.9149 0.0318 0.55 270 -0.4757 0.8411 0.0416 0.55 282 -0.5474 0.7555 0.0447 0.65 54 -0.6298 0.7967 0.0485 0.65 102 1.0031 0.8015 0.0678 0.65 114 0.2912 0.8252 0.0348 0.65 126 0.8516 0.6825 0.0597 0.65 150 -1.1323 0.8384 0.0749 0.65 222 -0.018 0.8286 0.03 0.65 234 0.1748 0.7163 0.0318 0.65 294 0.7209 0.8797 0.053 0.75 102 -0.7682 0.8414 0.0554 0.75 114 -1.1297 0.8581 0.0747 0.75 126 0.4789 0.7289 0.0417 0.75 138 -0.4542 0.8687 0.0407 0.75 210 -0.9078 0.8751 0.0627 0.75 222 -0.9449 0.5685 0.0646 0.75 234 0.3438 0.6388 0.0365 0.75 246 -1.6962 0.5163 0.1071 0.75 258 -1.0095 0.8652 0.0681 0.75 282 0.2106 0.856 0.0326 0.85 78 -0.1458 0.8436 0.0313 0.85 90 -0.7706 0.6935 0.0555 0.85 114 0.4114 0.7813 0.039 0.85 138 0.1415 0.887 0.0312 0.85 198 0.6024 0.8045 0.0472 0.85 210 0.9208 0.8474 0.0633 0.85 222 0.307 0.8391 0.0353 0.85 234 1.0716 0.5723 0.0715 0.85 246 0.0732 0.6979 0.0303 0.85 258 0.3395 0.7182 0.0364 0.85 270 1.1459 0.7239 0.0756 0.95 102 0.8956 0.6629 0.062 0.95 222 -0.0304 0.6786 0.0301 0.95 234 0.7199 0.5884 0.0529 0.95 258 0.7473 0.556 0.0543 0.95 270 -0.7955 0.5718 0.0568